Projects per year
Abstract
The biomanufacture of two types of platinum bionanoparticle (bioNP) using Escherichia coil MC4100 (1% and 20% by mass metal loading) together with a method for both liberating the nanoparticles (NPs) from the bacterial layer and their subsequent critical cleaning is reported. The possibility of an enantiomeric excess of chiral kink sites forming on the surface of the Pt nanoparticles produced by the bacteria was investigated using the electrooxidation of D- and L-glucose as the chiral probe. Transmission electron microscopy revealed that the Pt bioNPs (after recovery and cleaning) were typically 2.3 +/- 0.7 nm (1% loading) and 4.5 +/- 0.7 nm (20% loading) in diameter. The D- and L-glucose electrooxidation measurements did not give rise to any chiral response using either of the Pt bioNPs types but did display differing CV profiles. This suggested that the overall surface morphology of each bioNP could be controlled by the degree of metal loading but that no enantiomeric excess of intrinsically chiral surface kink sites was present.
Original language | English |
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Pages (from-to) | 5267-5274 |
Number of pages | 8 |
Journal | Langmuir |
Volume | 28 |
Issue number | 11 |
DOIs | |
Publication status | Published - 1 Mar 2012 |
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Dive into the research topics of 'Biosynthesis of Platinum Nanoparticles by Escherichia coli MC4100: Can Such Nanoparticles Exhibit Intrinsic Surface Enantioselectivity?'. Together they form a unique fingerprint.Projects
- 2 Finished
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Novel precious metal nanocatalyst made by biofabrication
Macaskie, L., Wood, J. & Shannon, I.
Engineering & Physical Science Research Council
1/01/10 → 30/06/11
Project: Research Councils
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Functional bionanomaterials and novel processing for targeted catalytic applications
Macaskie, L., Shannon, I. & Wood, J.
Engineering & Physical Science Research Council
8/01/07 → 7/10/10
Project: Research Councils